ThinkPad S540 - Power Problems

Solution:Dischargeandrechargethebuilt-inbattery.
•Problem:Theoperatingtimeforafullychargedbuilt-inbatteryisshort.
Solution:Dischargeandrechargethebuilt-inbattery.Ifyourbatteryoperatingtimeisstillshort,call
LenovoCustomerServiceCentertohaveitserviced.
•Problem:Thecomputerdoesnotoperatewithafullychargedbuilt-inbattery.
Solution:Thesurgeprotectorinthebuilt-inbatterymightbeactive.Turnoffthecomputerforoneminute
toresettheprotector;thenturnonthecomputeragain.
•Problem:Thebuilt-inbatterycannotbecharged.
Solution:Youcannotchargethebatterywhenitistoohot.Turnoffthecomputerandallowittocoolto
roomtemperature.Afteritcools,rechargethebattery.Ifitstillcannotbecharged,callLenovoCustomer
Servicetohaveitserviced.
Anacpoweradapterproblem
Problem:Theacpoweradapterisconnectedtothecomputerandtheworkingelectricaloutlet,butthe
poweradapter(powerplug)iconisnotdisplayedonthetaskbar.Alsothesystem-statusindicatordoesnot
blink.
Solution:Dothefollowing:
1.Ensurethattheconnectionoftheacpoweradapteriscorrect.Forinstructionsonconnectingtheac
poweradapter,seeSafety,Warranty,andSetupGuidethatcomeswithyourcomputer.
2.Iftheconnectionoftheacpoweradapteriscorrect,turnoffthecomputer,thendisconnecttheac
poweradapter.
3.Reconnecttheacpoweradapter,thenturnonthecomputer.
4.Ifthepoweradaptericonstillisnotdisplayedonthetaskbarandthesystem-statusindicatordoesnot
blink,havetheacpoweradapterandyourcomputerserviced.
Note:Todisplaythepoweradapter(powerplug)icon,clickShowhiddeniconsonthetaskbar.
Powerproblems
Printtheseinstructionsnowandkeeptheinstructionswithyourcomputerforreferencelater.
Ifyourcomputerisgettingnopoweratall,checkthefollowingitems:
1.Verifythepowerbutton.Referto“Statusindicators”onpage7.Thepowerbuttonislitwheneverthe
computerison.
2.Checkallpowerconnections.Removeanypowerstripsandsurgeprotectorstoconnecttheacpower
adapterdirectlytotheacpoweroutlet.
3.Inspecttheacpoweradapter.Checkforanyphysicaldamage,andensurethatthepowercableisfirmly
attachedtotheadapterbrickandthecomputer.
4.Verifytheacpowersourceisworkingbyattachinganotherdevicetotheoutlet.
5.Removealldevicesandthentestforsystempowerwithminimaldevicesattached.
a.Disconnecttheacpoweradapterandallcablesfromthecomputer.
b.Closethecomputerdisplay,andturnthecomputerover.
c.Removethememorymodule.Referto“Replacingamemorymodule”onpage72.
d.RemovethewirelessLANcard.Referto“ReplacingawirelessLANcard”onpage74.
118UserGuide